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MOTHERBOARD · VERIFIED EXACT MOTHERBOARD
MSI
PRO B850M-A WIFI
A strong current-generation AM5 micro-ATX anchor. Compare its 5 GbE and Wi-Fi 7 against the ASRock ITX option, then choose by case size and expansion needs.
Reference: Verified exact modelMPN: PRO B850M-A WIFISocket / chipset: AM5 · AMD B850Form factor: Micro-ATX · 243.84 × 243.84 mmMemory: 4 × DDR5 UDIMM · up to 256 GB · EXPOPower design: Direct 8+2+1 · 60 A SPS for Vcore
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Lowest verified price$194.99Exact MPN/SKU · Newegg Canada · CADIn stock
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Last checkedCurrentOct 6, 2026, 11:02 p.m. UTC
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VERIFIED MANUFACTURER MOTHERBOARD SHEET
Exact-model platform, expansion and limits
Confirmed facts
- MPN: PRO B850M-A WIFI
- Socket / chipset: AM5 · AMD B850
- Form factor: Micro-ATX · 243.84 × 243.84 mm
- Memory: 4 × DDR5 UDIMM · up to 256 GB · EXPO
- Power design: Direct 8+2+1 · 60 A SPS for Vcore
- Expansion: PCIe 5.0 x16 main slot with CPU-dependent mode
- Storage: 2 × M.2 · one up to PCIe 5.0 x4 and one up to PCIe 4.0 x4 · 4 × SATA
- Networking: Realtek 5 GbE · Wi-Fi 7 · Bluetooth 5.4
- Front connectivity: Rear and front USB-C 10 Gbps
- Audio: Realtek ALC897 · 7.1-channel
- Firmware: Flash BIOS and Clear CMOS buttons
- CPU support: Ryzen 7000 / 8000 / 9000 subject to the current support list and BIOS
Compatibility to confirm
Confirm the exact PRO B850M-A WIFI model, the current CPU-support list and BIOS version. PCIe and M.2 modes vary by Ryzen processor; do not treat every headline maximum as simultaneous.
A workstation that needs several add-in cards, more than two NVMe drives or unusually dense rear I/O.
Official manufacturer sources · checked August 19, 2026Official source 1 →Official source 2 →
Other useful details
The exact model, platform and retailer identity are tied to the same manufacturer record.
FAQ
Questions before buying this model
Who is the MSI PRO B850M-A WIFI best for?
A compact Ryzen 7000, 8000 or 9000 build that needs two M.2 slots, 5 GbE, Wi-Fi 7 and BIOS recovery without flagship ATX expansion.
Who should compare another option?
A workstation that needs several add-in cards, more than two NVMe drives or unusually dense rear I/O.
What should you compare before choosing?
A strong current-generation AM5 micro-ATX anchor. Compare its 5 GbE and Wi-Fi 7 against the ASRock ITX option, then choose by case size and expansion needs.
What must be verified before buying?
Confirm the exact PRO B850M-A WIFI model, the current CPU-support list and BIOS version. PCIe and M.2 modes vary by Ryzen processor; do not treat every headline maximum as simultaneous.
A question about this product?
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Questions about the PRO B850M-A WIFI
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